Search results for “Mole”

Carbohydrate Biochemistry & Polymer Chemistry Dimensionless A biomolecule composed of carbon, hydrogen and oxygen, usually with hydrogen and oxygen in the ratio found in water. Cₓ(H₂O)_y

Carbon-13 NMR Analytical Chemistry & Spectroscopy ppm An NMR technique that detects the carbon-13 nucleus to reveal the carbon skeleton of a molecule. δ 0–220 ppm

Cation Foundations of Chemistry C (charge) A positively charged ion produced when an atom or molecule loses one or more electrons. M → Mⁿ⁺ + n e⁻

Chirality Organic Chemistry Dimensionless The property of a molecule that makes it non-superimposable on its mirror image.

Chromophore Analytical Chemistry & Spectroscopy nm The part of a molecule responsible for absorbing light at a particular wavelength.

Coenzyme Biochemistry & Polymer Chemistry Dimensionless A small organic molecule that binds temporarily to an enzyme and is essential for its catalytic activity.

Condensation Polymerisation Biochemistry & Polymer Chemistry Dimensionless Polymerisation in which monomers join with the elimination of a small molecule, usually water. n A + n B → –(AB)ₙ– + n H₂O

Condensation Reaction Stoichiometry & Chemical Reactions Dimensionless A reaction in which two molecules join with the elimination of a small molecule, usually water. A–OH + H–B → A–B + H₂O

Conformational Isomerism Organic Chemistry kJ/mol The different spatial arrangements a molecule can adopt through rotation about single bonds.

Coordination Compound Inorganic & Coordination Chemistry Dimensionless A compound containing a central metal atom or ion bonded to surrounding molecules or ions by coordinate bonds. [M(L)ₙ]Xₘ

Calorific Value Thermochemistry & Thermodynamics kJ/g The heat released by the complete combustion of unit mass of a fuel. CV = ΔH_c / molar mass

Cannizzaro Reaction Organic Chemistry Dimensionless The disproportionation of an aldehyde with no alpha hydrogen under concentrated alkali into an alcohol and a carboxylate. 2RCHO + OH⁻ → RCH₂OH + RCOO⁻

Chain Isomerism Organic Chemistry Dimensionless Structural isomerism arising from different arrangements of the carbon skeleton.

Chain Reaction Chemical Kinetics & Catalysis Dimensionless A self-sustaining reaction sequence in which a reactive intermediate regenerates itself at each cycle. initiation → propagation → termination

Charles's Law States of Matter & Gas Laws m³/K At constant pressure, the volume of a fixed mass of gas is directly proportional to its absolute temperature. V₁ / T₁ = V₂ / T₂

Chelate Effect Inorganic & Coordination Chemistry kJ/mol The greater stability of a complex containing a multidentate ligand compared with one containing equivalent monodentate ligands. ΔS favourable

Chemical Formula Foundations of Chemistry Dimensionless A symbolic notation that states which elements a substance contains and in what proportions, using element symbols and subscripts.

Chemisorption Chemical Kinetics & Catalysis kJ/mol Strong adsorption in which actual chemical bonds form between the adsorbate and the surface. ΔH ≈ −80 to −400 kJ/mol

Collision Frequency Chemical Kinetics & Catalysis s⁻¹ The number of collisions occurring per unit volume per unit time in a reacting mixture. Z ∝ n²σ√T

Compressibility Factor States of Matter & Gas Laws Dimensionless The ratio of the actual molar volume of a gas to that predicted by the ideal gas law. Z = pV / nRT

Condensation States of Matter & Gas Laws kJ/mol The change of a substance from the gaseous to the liquid state, accompanied by the release of latent heat.

Covalent Bond Chemical Bonding & Molecular Structure kJ/mol A bond formed when two atoms share one or more pairs of electrons so that both achieve a stable configuration. A· + ·B → A:B

Critical Temperature States of Matter & Gas Laws K The temperature above which a gas cannot be liquefied by pressure alone, however great. T_c = 8a / 27Rb

Colligative Properties Solutions & Colligative Properties Various Solution properties that depend only on the number of dissolved solute particles, not on their chemical identity.

Results for “Mole”